Just as a strong personal statement can get you in, a poor personal statement/essay can quickly eliminate you from the mix. When a medical school committee has a few hundred applicants, seeing typos, spelling mistakes or bad content will quickly move you to the bottom of the pile. The personal statement is a quick way to "weed out" similar applicants. With two similar applications, the personal statement can decide who gets an interview and who does not.
The most convincing personal statements often consist of your academic records, accomplishments, and extra_curricular activities. It may also include any incredible circumstances, challenges, or adversities you have faced and the manner in which those bottlenecks have been overcome. There is nothing wrong in mentioning about your initiative, inspiration, headship, perseverance, and your ample experience in moving with other cultures. In short, all positive qualities or all achievements in light of the opportunities available to you can be mentioned.